Home / 20,207,575.70-30,311,363.55-12,145,418.90

Finding the Fourth Proportional to 20,207,575.70, 30,311,363.55 and 12,145,418.90

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Solution

The fourth proportional to 20,207,575.70, 30,311,363.55 and 12,145,418.90 is: 18,218,128.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,207,575.70 : 30,311,363.55 = 12,145,418.90 : x
  2. Step 2: Convert to fraction form
    20,207,575.70/30,311,363.55 = 12,145,418.90/x
  3. Step 3: Cross multiply
    20,207,575.70x = 30,311,363.55 × 12,145,418.90
  4. Step 4: Simplify right side
    20,207,575.70x = 368,144,207,744,941.12
  5. Step 5: Solve for x
    x = 368,144,207,744,941.12/20,207,575.70
  6. Step 6: Final answer
    x = 18,218,128.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.